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OpenStudy (anonymous):
(8x3 + 3x2 - 5) + (-3x3 - 3x - 2)
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OpenStudy (texaschic101):
8x^3 + 3x^2 - 5 + (-3x^3) - 3x - 2 = 8x^3 + 3x^2 - 5 - 3x^3 - 3x - 2 = (combine like terms) 5x^3 + 3x^2 - 3x - 7
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